CA1108748A - Processeur pour accroitre la longueur d'une suite d'elements d'image de donnees en facsimile - Google Patents

Processeur pour accroitre la longueur d'une suite d'elements d'image de donnees en facsimile

Info

Publication number: CA1108748A
Authority: CA; Canada
Prior art keywords: signal; measure; pel; reference signal; run
Prior art date: 1976-10-21
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA287,667A

Other languages

English (en)

Inventor

Edward G. Bowen

Arun N. Netravali

Frank W. Mounts

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

AT&T Corp

Original Assignee

Western Electric Co Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1976-10-21

Filing date

1977-09-28

Publication date

1981-09-08

1977-09-28 Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc

1981-09-08 Application granted granted Critical

1981-09-08 Publication of CA1108748A publication Critical patent/CA1108748A/fr

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 claims description 7
230000003139 buffering effect Effects 0.000 claims description 3
230000008878 coupling Effects 0.000 claims 1
238000010168 coupling process Methods 0.000 claims 1
238000005859 coupling reaction Methods 0.000 claims 1
230000015654 memory Effects 0.000 abstract description 48
230000005540 biological transmission Effects 0.000 abstract description 3
238000011068 loading method Methods 0.000 abstract description 2
238000001514 detection method Methods 0.000 description 3
238000010586 diagram Methods 0.000 description 2
WABPQHHGFIMREM-AKLPVKDBSA-N lead-210 Chemical compound [210Pb] WABPQHHGFIMREM-AKLPVKDBSA-N 0.000 description 2
230000004044 response Effects 0.000 description 2
WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
- H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
- H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Image Processing (AREA)
Detection And Prevention Of Errors In Transmission (AREA)

CA287,667A 1976-10-21 1977-09-28 Processeur pour accroitre la longueur d'une suite d'elements d'image de donnees en facsimile Expired CA1108748A (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US734,387		1976-10-21
US05/734,387 US4086620A (en)	1976-10-21	1976-10-21	Processor for increasing the run-length of facsimile data

Publications (1)

Publication Number	Publication Date
CA1108748A true CA1108748A (fr)	1981-09-08

Family

ID=24951486

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA287,667A Expired CA1108748A (fr)	1976-10-21	1977-09-28	Processeur pour accroitre la longueur d'une suite d'elements d'image de donnees en facsimile

Country Status (2)

Country	Link
US (1)	US4086620A (fr)
CA (1)	CA1108748A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4185302A (en) *	1978-07-20	1980-01-22	Bell Telephone Laboratories, Incorporated	Run length encoding of facsimile signals
US4185303A (en) *	1978-11-30	1980-01-22	Bell Telephone Laboratories, Incorporated	Run length encoding of facsimile pictures
JPS5937774A (ja) *	1982-08-26	1984-03-01	Nec Corp	画像信号の符号化方法および装置
US4631521A (en) *	1984-12-31	1986-12-23	Wang Laboratories, Inc.	Method and apparatus for differential run-length coding
US5170266A (en) *	1990-02-20	1992-12-08	Document Technologies, Inc.	Multi-capability facsimile system
JP2004334295A (ja) *	2003-04-30	2004-11-25	Yamaha Corp	記憶装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2978535A (en) *	1960-01-28	1961-04-04	Bell Telephone Labor Inc	Optimal run length coding of image signals
JPS5132488B2 (fr) *	1971-12-30	1976-09-13

1976
- 1976-10-21 US US05/734,387 patent/US4086620A/en not_active Expired - Lifetime
1977
- 1977-09-28 CA CA287,667A patent/CA1108748A/fr not_active Expired

Also Published As

Publication number	Publication date
US4086620A (en)	1978-04-25

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Legal Events

Date	Code	Title	Description
1998-09-08	MKEX	Expiry